Resilient rail fastening



Sept. 24, 1935. M. -RUPING 2,015,194

RESILIENTl RAIL FAS-TENING Filed July 28, 1935 2 sheets-sheet 1 MAX FOPIN@ INVENTOR;

Mums y.

sept. 24, 1935. M. RPING 2,015,194

RES ILIENT RAIL FASTENING Filed July 28, 1933 2 Sheets-Sheet 2 MAX INVENTOR;

@y www LA Mummy Patented Sept. 24, 1935 UNITED STATES PATENT j OFFICE Application July 28, 1933, Serial No. 682,558

Germany April 15, 1933 'l Claims.

The present invention relates to an improved resilient rail fastening and to the means for applying and releasing the fastening.

A common form of resilient rail fastening is a 5 spike the shank of which is made resilient by adequate elongation or bowing and the head of which is made resilient by a double curve. The spike lis quadrangular in cross section and passes through the usual tie plate into a wooden sleeper. l Aside from the fact that the quadrangular cross section of the spike detracts from its resiliency, there is no known spring steel which is capable of withstanding the operations necessary to produce the bendings and curvatures in this spike. l As distinguished from the rail fastening spike thus briefly referred to, the object of the present invention is to provide an absolutely resilient rail fastening for holding the rail on wooden sleepers, the defects of prior art constructions l0 being entirely obviated.

I accomplish this object by providing a rail fastening member which is constructed of superimposed spring steel bands, the shank portions of which are secured in the wooden sleeper, the tie 25 plate serving to hold the bands tightly together,

and the heads of the member above the tie plates being curved in the arcs of circles and acting to holddown the rails. 'I'he heads of the fastening member preferably engage in notches of the lat- 30 eral flanges of the tie plates, so that if the rails creep the spring steel bands will not twist. The heads of the bands may have their ends relatively offset, and they may also be tapered. It is also advantageous to interconnect two or more spring 35 bands at their foot ends.

My improved resilient rail fastening receives -the thrusts and consumes them in that they are converted into form change effort. The construction of the springs is such that pronounced bends, 40 which cause changes in cross section and which place great strain on the metal libres, thus inducing fatigue and rupture of the springs, are obviated. By the positive connection between the springs and the tie plates, uniform distribu- 45 tion of all dynamic forces over the several springs is achieved. Furthermore, the positive engagement of the springs by the Walls of the holes in the tie plates provides a close juxtaposition of the bands and prevents widening of the holes 50 in the sleepers. Should the rails move upwardly, the backs of the springs would flex against the outer walls of the holes in the tie plates thus effecting a tension engagement between the plates and the springs.

' 55 As the heads of the spring bands above the tie y plates are curved in the arcs of circles, they present no impact receiving surfaces by which the bands may be driven into the sleeper, and to enable the bands to be driven into the sleeper I provide a suitable applying member for that pur- 5 pose. The applying member comprises a body having a surface for engaging the curved face of the upper spring band, a hook or projection to overlie the end of the upper band and an impact receiving surface which, whenl the applying member is in operative position, is in line with the longitudinal axis of the Shanks of the bands. It is valso desirable to provide the body' with a depressed portion between the engaging surface and the hook or projection. For the purpose of withdrawing the spring bands from the sleeper and tie plate I provide a device which comprises a pair of jaws, preferably articulated to each other, which embrace the springs in proximity to their curved portions, the jaws being provided with lateral projections and capable of being engaged and lifted by a spike drawer or like tool.

'I'he invention is illustrated in the accompanying drawings in which Fig, 1 is an end elevational 25 view partly in section of my improved rail fastening; Fig. 2 is a yplan partly in section; Figs.

3 to 6 are fragmentary cross sectional views of various modified forms of fastening; Fig. 7 is a side elevational view of the applying mechanism in operative position on the rail fastening; Fig. 8

is a side elevational view and Fig. 9 a transverse sectional view of the device for withdrawing the fastening from its anchorage.

Referring to Figs. 1 and 2, it will be noted that 35 the fastening comprises a pair of superimposed steel spring bands I the shanksof which extend through holes 4 in the tie plate 3 and the lower ends of which are held in preformed holes in the sleepers 30. The shanks are held in close juxtaposition by the walls of the holes 4 and the upper ends of the bands which are curved in the radii of circles hold the rails 2 down on the sleepers by engagement with the rail flanges. As indicated at the left of Fig. 1, the heads of the bands, may engage in notches of the flanges 3| of the tie plates 3. The ends of the heads of the bands are desirably offset in relation to each other as shown in the several gures.

In the modied form of Fig. 3 the upper of 50 the two bands Ia is tapered and the lower ends of the bands are connected to each other.

Fig. 4 discloses a 'modified form in which the upper ends of both bands Ib are tapered.

The modified form of Fig. 5 discloses a con- 55 struction in which the lower ends of the bands I are connected to each other and the upper ends are untapered, while the shanks are splayed or spread to increase the holding effect.

The modified construction of Fig. 6 is one in which three bands are employed, the upper and lower bands Id interconnected at their foot ends and an intermediate band 6, the upper ends of all these bands being relatively offset.

The applying member shown in Fig. '1 comprises a b ody 9 having an engaging surface I0 conforming to the curvature of the head of the bands I, a hook or projection II for engaging the forward end of the top spring band and an impact receiving surface or anvil part 8 which is in line with the longitudinal axis of the shanks of the spring bands I. It is desirable to form a depression I2 in the body 9 between the engaging surface I0 and the hook II.

If a blow be delivered against the anvil 8, the force of the blow is directly transmitted to the Shanks of the bands through the engaging surface I0 which is prevented from slipping off from the bands by the hook II. The depression I2 is a contributory factor in ensuring that the force of the blow delivered against the anvil 8 shall be distributed through the curvatures of the springs in the direction of their shanks.

The fastening withdrawal device of Figs. 8 and 9 comprises a pair of jaws I3 and I4 mounted on a pivot pin 1, and having lateral projections I5 under which the tines of a spike drawer I6 (shown in dotted lines in Figs. 8 and 9) may engage. Upon depression of the bar I1 of the spike drawer the jaws I3 and I4 are raised and the spring bands I drawn out of the sleeper 30.

The invention is not limited to the details of construction shown and described as these may be substantially varied within the scope of the appended claims.

I claim:

1. Resilient fastening for securing railway rails to wooden sleepers, comprising a resilient clamp having a shank of substantially the same length and cross section as a rail spike, said clamp consisting of a plurality of substantially parallel spring metal bands superimposed in the shank and upper portion of the clamp, `the shank projecting in a perforation of the sleeper and the upper portion being curved towards the rail and engaging with its end the flange of the rail.

2. The resilient fastening according to claim 1 and in which the rails rest on tie plates having notched flanges, the upper portion of the clamp engaging a notch in said flange.

3. The resilient fastening according to claim 1 and-in which the extreme ends of the upper portions of the bands are relatively offset.

4. The resilient fastening according to claim 1 and in which the upper end of at least one band is tapered.

5. The resilient fastening according to claim 1 and in which the lower ends are connected with one another. f

6. The resilient fastening according to claim 1 and in which the upper portions of the bands are shaped into segments of an arc.

'7. Resilient clamp for railway rails, comprising a plurality of substantially parallel superimposed metal bands formed into a shank and a curved upper portion, the shank being of substantially the same length and diameter as a rail spike and the curved upper portion adapted to overlie the rail flange.

MAX RPING. 

